We are the buyers, they are not responsible with there work.
App is full of bugs, i’m developer that why i know. have minimum function.
They told in description, you will get things which are in website script. And when we purchase they asking money to update things.
Why they are not updating the app. I suggest you envato support this is very bad way to deal with your customer.
Look: We buy app to publish pur product, but this is not happen. Are you getting my point?